Long live Qt 4.5!

1 files changed, 185 insertions, 0 deletions

diff --git a/src/gui/painting/qpaintdevice_mac.cpp b/src/gui/painting/qpaintdevice_mac.cpp
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+++ b/src/gui/painting/qpaintdevice_mac.cpp
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+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the QtGui module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain
+** additional rights. These rights are described in the Nokia Qt LGPL
+** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qpaintdevice.h"
+#include "qpainter.h"
+#include "qwidget.h"
+#include "qbitmap.h"
+#include "qapplication.h"
+#include "qprinter.h"
+#include <qdebug.h>
+#include <private/qt_mac_p.h>
+#include <private/qprintengine_mac_p.h>
+#include <private/qpixmap_mac_p.h>
+#include <private/qpixmap_raster_p.h>
+
+QT_BEGIN_NAMESPACE
+
+/*****************************************************************************
+  Internal variables and functions
+ *****************************************************************************/
+
+
+/*****************************************************************************
+  External functions
+ *****************************************************************************/
+
+extern void qt_painter_removePaintDevice(QPaintDevice *); //qpainter.cpp
+
+/*****************************************************************************
+  QPaintDevice member functions
+ *****************************************************************************/
+QPaintDevice::QPaintDevice()
+{
+    painters = 0;
+}
+
+QPaintDevice::~QPaintDevice()
+{
+    if(paintingActive())
+        qWarning("QPaintDevice: Cannot destroy paint device that is being "
+                 "painted, be sure to QPainter::end() painters");
+    qt_painter_removePaintDevice(this);
+}
+
+int QPaintDevice::metric(PaintDeviceMetric) const
+{
+    return 0;
+}
+
+/*! \internal */
+float qt_mac_defaultDpi_x()
+{
+    // Mac OS X currently assumes things to be 72 dpi.
+    // (see http://developer.apple.com/releasenotes/GraphicsImaging/RN-ResolutionIndependentUI/)
+    // This may need to be re-worked as we go further in the resolution-independence stuff.
+    return 72;
+}
+
+/*! \internal */
+float qt_mac_defaultDpi_y()
+{
+    // Mac OS X currently assumes things to be 72 dpi.
+    // (see http://developer.apple.com/releasenotes/GraphicsImaging/RN-ResolutionIndependentUI/)
+    // This may need to be re-worked as we go further in the resolution-independence stuff.
+    return 72;
+}
+
+
+/*! \internal
+
+    Returns the QuickDraw CGrafPtr of the paint device. 0 is returned
+    if it can't be obtained. Do not hold the pointer around for long
+    as it can be relocated.
+
+    \warning This function is only available on Mac OS X.
+*/
+
+Q_GUI_EXPORT GrafPtr qt_mac_qd_context(const QPaintDevice *device)
+{
+    if (device->devType() == QInternal::Pixmap) {
+        return static_cast<GrafPtr>(static_cast<const QPixmap *>(device)->macQDHandle());
+    } else if(device->devType() == QInternal::Widget) {
+        return static_cast<GrafPtr>(static_cast<const QWidget *>(device)->macQDHandle());
+    } else if(device->devType() == QInternal::Printer) {
+        QPaintEngine *engine = static_cast<const QPrinter *>(device)->paintEngine();
+        return static_cast<GrafPtr>(static_cast<const QMacPrintEngine *>(engine)->handle());
+    }
+    return 0;
+}
+
+extern CGColorSpaceRef qt_mac_colorSpaceForDeviceType(const QPaintDevice *pdev);
+
+/*! \internal
+
+    Returns the CoreGraphics CGContextRef of the paint device. 0 is
+    returned if it can't be obtained. It is the caller's responsiblity to
+    CGContextRelease the context when finished using it.
+
+    \warning This function is only available on Mac OS X.
+*/
+
+Q_GUI_EXPORT CGContextRef qt_mac_cg_context(const QPaintDevice *pdev)
+{
+    if (pdev->devType() == QInternal::Pixmap) {
+        const QPixmap *pm = static_cast<const QPixmap*>(pdev);
+        CGColorSpaceRef colorspace = qt_mac_colorSpaceForDeviceType(pdev);
+#if (MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_4)
+        uint flags = kCGImageAlphaPremultipliedFirst;
+#ifdef kCGBitmapByteOrder32Host //only needed because CGImage.h added symbols in the minor version
+        if(QSysInfo::MacintoshVersion >= QSysInfo::MV_10_4)
+            flags |= kCGBitmapByteOrder32Host;
+#endif
+#else
+        CGImageAlphaInfo flags = kCGImageAlphaPremultipliedFirst;
+#endif
+        CGContextRef ret = 0;
+
+        // It would make sense to put this into a mac #ifdef'ed
+        // virtual function in the QPixmapData at some point
+        if (pm->data->classId() == QPixmapData::MacClass) {
+            const QMacPixmapData *pmData = static_cast<const QMacPixmapData*>(pm->data);
+            ret = CGBitmapContextCreate(pmData->pixels, pmData->w, pmData->h,
+                                                     8, pmData->bytesPerRow, colorspace,
+                                                     flags);
+            if(!ret)
+                qWarning("QPaintDevice: Unable to create context for pixmap (%d/%d/%d)",
+                         pmData->w, pmData->h, (pmData->bytesPerRow * pmData->h));
+        } else if (pm->data->classId() == QPixmapData::RasterClass) {
+            QImage *image = pm->data->buffer();
+            ret = CGBitmapContextCreate(image->bits(), image->width(), image->height(),
+                                        8, image->bytesPerLine(), colorspace, flags);
+        }
+
+        CGContextTranslateCTM(ret, 0, pm->height());
+        CGContextScaleCTM(ret, 1, -1);
+        return ret;
+    } else if (pdev->devType() == QInternal::Widget) {
+        CGContextRef ret = static_cast<CGContextRef>(static_cast<const QWidget *>(pdev)->macCGHandle());
+        CGContextRetain(ret);
+        return ret;
+    } else if (pdev->devType() == QInternal::MacQuartz) {
+        return static_cast<const QMacQuartzPaintDevice *>(pdev)->cgContext();
+    }
+    return 0;
+}
+
+QT_END_NAMESPACE